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Date: Thu, 6 Nov 2008 10:03:29 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Ben Hutchings <bhutchings@solarflare.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>, Thomas Gleixner <tglx@linutronix.de>,
       Yinghai Lu <yhlu.kernel@gmail.com>, linux-kernel@vger.kernel.org,
       "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH v2] x86: Don't allow nr_irqs > NR_IRQS
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* Ben Hutchings <bhutchings@solarflare.com> wrote:

> On Wed, 2008-11-05 at 22:11 +0300, Cyrill Gorcunov wrote:
> [...]
> > Ben I didn't manage to get a look over ACPI related changes
> > (ie to find the reason why the kernel is able to reveal 5 IO-APICs
> >  now
> [...]
> 
> I was mistaken; that *isn't* a recent change.  A default RHEL 5 
> kernel (based on 2.6.18) also finds 5 IOAPICs.

yes - it's simply a box with a lot of IO-APICs. That's not bad at all, 
it spreads out IRQ processing amongst devices.

	Ingo